diu3 laap6 aap2吊臘鴨吊腊鸭

How it's used

This expression is a vivid piece of Cantonese slang that describes the rhythmic, bobbing motion of someone's head when they are struggling to stay awake while sitting upright. It draws a humorous comparison to the way preserved ducks are hung up in traditional shops to dry. It is strictly used for nodding off in a seated position, rather than falling into a deep sleep.